Is China United Engineering Co., Ltd. a state-owned enterprise or a central enterprise?

According to Aiqi's inquiry, China United Engineering Co., Ltd. is a large-scale scientific and technological engineering company with the former Second Design and Research Institute of Machinery Industry as the core and a number of national first-class survey and design units. It belongs to China National Machinery Industry Group Co., Ltd., a large-scale central enterprise group and one of the world's top 500 enterprises, and is headquartered in Hangzhou. At present, Zhonglian has more than 6,000 employees, and more than 95% of them are professional and technical personnel, including 7 academicians from China Academy of Engineering and China Academy of Sciences, 8 national survey and design masters, 1 person, a national candidate for "Millions of Talents Project in the New Century", and 104 experts enjoying special government allowance from the State Council.